it sounds like he’s finding his way. It is pretty natural to test limits when a kid goes from high school to away at college. If he really seems to get it now - I’d have him go to the prof giving him the F, own the situation like a grown up and see what his options are while there’s still a little time to make it up - perhaps some extra credit, community service or something - maybe he can withdraw but, worst case - he can probably re-take the class next semester (most schools will allow you to re-take a D or F and replace it on your transcript.)
Hoping he takes away a life lesson and a little motivation.